I'm having the same problems. I'm using a laptop - and am based in the UK most of the time. I usually use a variety of channels. I am in the UAE for a while, and, whilst not having changed any of my internet settings (apart from the obvious dial-in ISP), i find i cannot join some of those channels (mp3passion in particular).
I actually join the channel, then it kicks me out and cites being banned as the reason.
I have done a bit of research, and most people from the UAE cannot join this channel, whilst those outside it can join. I believe this is due to the proxy server in the UAE banning the channel.
Is an ISP allowed to block IRC channels, and is there anything i can do to get around the problem??
Any help or guidance would be appreciated.
Regards.